Lubricating system for milling-machine knees.



J. GOETZ, W. K. BUXBAUM & F. A. PARSONS. LUBRIGATING SYSTEM POR MILLINGMACHINE KNEES. APPLICATION FILED Nov.1a,1913.

1,087,365, Patented Feb.17,1914 Y 2 SHBETB-BHEBT 1.

i III.

J. GUETZ, W. K. BUXBAUM & P. A. PARSONS. LUBRIGATING SYSTEM FOR MILLINGMACHINE KNEES.

APPLICATION FILED NOV. 13, 1913. 1,087,365.

Patented Feb. 1'?, 1914.

2 SHEETS-SHEET 2.

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47' TRA/Enf UNITED sra'rns PATENT omiten.`

Jorrit soufre, oF p WEST arms,

1T mall/whom t may concern:

Be it known that we, J oHN Gon'rz, a citi- Zeni of the United States,and resident of West Allis; in the count of Milwaukee and State ofVisconsin, an WILLIM K. Brix- BAUM and FRED A. PARsoNs, citizens oi theUnited States, and residents of Milwaukee, in the county of Milwaukeeand State of Wisconsin, have invented new and useful Improvements inLubricating' Systems iw" Milling-Machine Knees, of which the followingis a description, reference being had to the accompanying drawings,which are a part of this specification.

This invention has for its object to pro` lvide a lubricating system4for supplying lu-4 bricant under pressure to the various operatinff.Darts carried by the vertically adjustab e'aknee of a milling machineand for the return of lubricant to the casing of the milling machine,which system will be unaffected by the adjustment of the knee member onthe Casin of the millin machine.

With t e above and ot erobjects in vieiv the invention consists in thelubricating system for milling vmachine knees Vas herein claimedand allequivalents. p

.Referri 'tothe accompanying. drawn ws iniwhich'il e characters ofreference in i- 3Q catetithe'i' same parts in different views,`l-@Figure 1 is a longitudinal `vertical sectional view 'of a millingmachine knee provided with a lubricating system constructed inaccoi-dance with this invention#V Q is a 3.5,si'milar view on a plane atright angles to fithe sectionalplane of Fig.l l; Fi 3 is af sectionalplan View of the adjusteb e sliding connectionbetween the knee and thecasing of the milling machine; and, 4 is a de- 40 tail sectional View ofthe lubricant passagel e "sway-'1to1 the gearbox.

" Ulti-these *drawings l0 indicates a milling machine casing of ordinaryconstruction and lli'shthe hollow knee member which isvertzicIi'lly-ladjustable thereon by having undercut-lilanges' 12slidably fitting upon dovetail .be figiianges 13 of the caslng. Theverti- .idiistments of the knee are accom- Speccation of Letters Patent.

AND WILLIAM K. BUXBAUM AND FRED A. PARSONS, oF MILWAUKEE, WISCONSIN.

' LUBBICATING SYSTEM FOR MILLING-MACHINE KNEES.

Patented-Feb. 17, 1914;

.application led November 13, 1913. Seriai No. 800,729.

plished by the turning of a jackscrew 14 which 1s threaded in astationary nut 15 at its lowerend and has keyed to it abeveled gearwheel 16 at its upper end. The beveledl gear 16 forms a bearing betweenthe jackscrew and the knee by having its cylindrical sleeve-like portionlit-tingv Within a. .vertical bearing bracket 17 forming a part of thelknee construction. The j'ackscrew `14 i is turned b means of a shaft '18journaled in another caring bracket 19 of the knee construction andcarrying a beveled pinion 20 on its end meshing with the beveled gear16.

A lubricant supply pipe 21 leading from any suitable source of lubricantsupply under pressure within the casing'of the milling machineterminates at the bearing zsurface of one of the flanges of the' casingand v a vertical groove 2Q in the bearing surface of the knee memberregisters with the end.

and its other end clcsedfby a screw plug 25.

A feed tube26 leads *from the header pipe 24 to the dish-shapedupperportionbf the.

beveled gear 16 from which a 'passageway leads to the bearing surfacevof the" bearing bracket 17 while overflow from the beveled gear 16Willserve to lubric'ate the intermeshing Iteeth of the said "ear and itsdriving pinion 20, the surplus alling to the bottom` lof the interior ofthe knee which ormsfa chamber 27 herefor. A cylindrical guard 28prevents the outlet of the lubricant through the opening in the .bottomof .the`

knee through which the jackscrevv passes and an overhanging shield Q9prevents they drip of lubricant into the interior ot the guard 28; Thelubricant in the chamber '27, however, is free to discharge in allposithe portion orming the uppe section at the bottom of the 'chamberleaning to a vertical groove 3l inv the nearing! surface of'the kneewhich registers with a series of openings 32 through the wall of themilling machine casing at different elevations. Thus' the lubricant isreturned from the knee to the casing from which it was taken. Anotherfeed tube 33 leads from the header. pipe 24 to the bottom of bearing 19for the shaft 18 which turns the jackscrew for raising and lowering theknee, while a feed t'ube 34 leads from the header pipe 24 to the bottomof a bearing 35 at thev end of the knee for a shaft 36 which carries apinion 37 meshing with a pinion 38, the latter in turn meshing with apinion 39 on a shaft 40 passing through the end wall of the knee. Theoverflow of oil fed tothe bearing 36 through the feed tube 84 serves tolubricate this train of gearing,` and furthermore a dam 41 formed at thebottom of the knee at this .end serves to confine such oil until itreaches a level which will permit it to enter a central opening 42 inthe shaft 40 which leads to its bearing surface to lubricate the' same.Another feed tube 43 leads from the header pipe 24 to` an opening 44 inthe side wall of the knee extending to the bearing surface of a gearcasing 45 which is secured to the knee and forms a continuation of thelubricant well in which the oil is held by the dam 41. Passageways 46 inthe end wall of the gear casing 45 leads to bearingsfor shafts 47 whichare journaled in the'gear casing to supply lubricant to such bearings.

In operation the lubricant supply under pressure maintains itscommunication with the header pipe within the knee in all positions ofthe knee and this supply of lubricant` is distributed through the feedtubes to the various bearing surfaces, the surplus oil dripping from thebearingsurfaces falling into the chamber 27 from which -it returnsthrough the ,openings 30 and 32- to the casing of the milling machine,enough of the oil being retained by the dam 41 to lubricate shaft 40 anda shaft 48 which is journaled on the same level therewith in the gearcas- 1n Vhat we claim as new and desire to secure by Letters Patent is:A

l. In a milling machine, a lubricating system for the knee thereofcomprising a lubricant supply pipe deliverin lubricant under i knee andabeveled gear on the jackscrew for l turning the same, a shaft journaledin the knee, a beveled pinion thereon-meshing with and to the bearing ofthe said shaft.

3. In a milling machine having an adjustside of the knee with shaftsjournaled in the knee and the gear casing, a lubricant supply pipeleading to the knee bearin surface onn the milling machine casing, a eedpipe in the knee having communicationwith the lubricantsupply pipe indifferent positions of the knee, a header pipe connected with the feedpipe, feed tubes'leading from the header pipe to the bearings of theshafts in the knee and the gear casing, a shaft journaled in the kneehaving a central passageway leading to its bearing, and a dam Within theknee for retaining oil within the knee to the level of said passageway.4, In a milling machine having an adjustable knee and a gear ca sinsecured to the side of the knee with sha s journaled in the knee andthe' gear casing, a lubricant supply pipe leading to the knee bearingsurface on the milling machine casing, a feed pipe in the knee havingcommunication with the lubricant supply pipe in different positions ofthe knee, a headerl ipe connected with the feed pipe, and feedp from theheader pipe' to the bearings of the shafts in the knee and the gearcasing.

5. In a milling'machine having an adjustable knee with a jackscrew formoving the turning the same, a shaft journaled in the knee, a beveledpinion thereon meshing with the beveled gear, said-beveled gear beingbearing of the jackscrew, a lubricant supply pipe deliverin lubricant tothe-knee bearing surface othe milling machine casing, a feed pipe in theknee having communication with the lubricant supply ipe in differentIositions of the knee, a hea er ipe within t e knee connected with theeed pipe, feed tubes leading from the header pipe to the dish-shapedupper end of the beveled gear and to the bearing of the said shaft, agear casing secured to the side of the knee and communicating with theinterior therethe beveled gear, said beveled gear being`l dish-shapedupper end of the beveled gear able knee and a gear casing secured to thetubes `leading knee and a beveled gear on the jackscrew for dish-shapedat its upper end with 'a1 lubri-4 cant passageway leading therefrom tothe aoV of, shafts journaled in the knee and the gear l and means forreturning lubricant from the casing, feed tubes leading from the headerl knee to the Casing of the milling machine.

pipe to the bearings of said shaft in the knee In testimony whereof, weaffix our signaand the gear casing, another shaft journaled tures, inpresence of two witnesses.

5 in the end of the knee and having a central J CHN GOETZ.

passageway leading to its bearing, a dam WILLIAM K. BUXBAUM. within theknee for holding the lubricant FRED A. PARSONS. overflow from the supplythrough the last Witnesses: mentioned feed tubes to the level of thecen- C. H. KEENEY,

10 tral passageway in the last mentioned shaft, EMILY SCHOWALTER.

